Ep. 7: Invitation to the Secret Base.

Episodes

• Ep. 3 · Thieves of the Millennium
• Ep. 4 · A meteorite vanishes without a trace
• Ep. 5 · The Underground Boat Is...
• Ep. 6 · The Underground City
• Ep. 7 · Invitation to the Secret Base.
• Ep. 8 · Underground explosion crisis
• Ep. 9 · Investigating the Mystery Surrounding the Large Cave
• Ep. 10 · A battle occurs within the sacred cave location.
• Ep. 11 · Are the Millennium Thieves Friends or Foes?

All 42 episodes →